CN114069214B - 5G millimeter wave dual-band antenna based on dual-ring structure - Google Patents
5G millimeter wave dual-band antenna based on dual-ring structure Download PDFInfo
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- CN114069214B CN114069214B CN202111370735.XA CN202111370735A CN114069214B CN 114069214 B CN114069214 B CN 114069214B CN 202111370735 A CN202111370735 A CN 202111370735A CN 114069214 B CN114069214 B CN 114069214B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a 5G millimeter wave dual-band antenna based on a dual-ring structure, which comprises a microstrip feeder, an antenna radiator, a first dielectric substrate, a second dielectric substrate and a third dielectric substrate, wherein the microstrip feeder is arranged on the microstrip feeder; the antenna radiator is arranged at the top end of the first dielectric substrate; the first medium substrate, the second medium substrate and the third medium substrate are sequentially attached to each other along the vertical direction; the first dielectric substrate is provided with a plurality of metalized through holes; a plurality of metallized through holes on the first dielectric substrate are arranged along the circumferential direction of the antenna radiator; the second dielectric substrate and the third dielectric substrate are respectively provided with a first coupling gap and a second coupling gap, and the microstrip feeder line is arranged on the lower surface of the third dielectric substrate and is vertically arranged with the second coupling gap; the invention can realize the dual-band characteristic of the antenna through a simple structure and has the advantages of simple structure, small size and the like.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a 5G millimeter wave dual-band antenna based on a dual-ring structure.
Background
Current wireless communication technology is rapidly evolving to meet information needs. With the advent of the 5G age, the millimeter wave band has been increasingly utilized, and design of millimeter wave antennas has become very desirable. Meanwhile, due to the increase of frequency bands, different frequency bands need to work simultaneously, so that research on multi-band antennas is becoming more and more important.
Patent document CN201017986Y discloses a low-posture small-sized built-in antenna for a mobile phone, which is provided with a double-feed point antenna main body fixed on a bracket, and is characterized in that the antenna main body is sheet-shaped and covers the upper bracket surface of the bracket, a slit is formed on the sheet-shaped antenna main body to enable the sheet-shaped antenna main body to be in a polygonal antenna shape, the head end of the polygonal antenna is positioned at a position close to one corner of the upper bracket surface of the bracket, and two feed legs for connecting with a circuit board are arranged. The scheme can meet the requirement of low-frequency performance, and can meet the requirement of the CDMA single-band mobile phone built-in antenna in the range of 824MHz to 894MHz with smaller volume. But cannot meet the use environment of the multiband antenna and overcome the technical problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a 5G millimeter wave dual-band antenna based on a dual-ring structure.
The 5G millimeter wave dual-band antenna based on the dual-ring structure comprises a microstrip feeder, an antenna radiator, a first dielectric substrate, a second dielectric substrate and a third dielectric substrate, wherein the microstrip feeder is arranged on the microstrip feeder;
the antenna radiator is arranged at the top end of the first dielectric substrate;
the first medium substrate, the second medium substrate and the third medium substrate are sequentially attached to each other along the vertical direction;
the first dielectric substrate is provided with a plurality of metalized through holes; a plurality of metallized through holes on the first dielectric substrate are arranged along the circumferential direction of the antenna radiator;
the second dielectric substrate and the third dielectric substrate are respectively provided with a first coupling gap and a second coupling gap, and the microstrip feeder line is arranged on the lower surface of the third dielectric substrate and is vertically arranged with the second coupling gap;
establishing a space rectangular coordinate system, wherein the origin of the coordinate system is arranged in the center of the top surface of the first dielectric substrate, the x-axis is the width direction of the first dielectric substrate, the y-axis is the length direction of the first dielectric substrate, and the z-axis is the thickness direction of the first dielectric substrate; the antenna radiator is symmetrical along the x axis and the y axis.
Preferably, the antenna radiator comprises a double-ring nested radiation patch and a parasitic branch copper-clad layer, the double-ring nested radiation patch and the parasitic branch copper-clad layer are integrally connected, and the double-ring nested radiation patch and the parasitic branch copper-clad layer are symmetrical along the x axis and the y axis.
Preferably, the dual-ring nested radiation patch comprises an intermediate connection portion, two first ring portions, two first circular portions and two second ring portions, wherein the first ring portions, the second ring portions and the first circular portions are symmetrical along the y axis, the first circular portions, the second ring portions and the first ring portions are sequentially and concentrically arranged from inside to outside, the two first circular portions are symmetrically arranged along the x axis, and the two first circular portions are connected through the intermediate connection portion.
Preferably, the parasitic dendrite copper-clad layer comprises a transition part and two protruding parts, wherein the protruding parts are connected with the first ring part through the transition part, the protruding parts are symmetrical along the x axis, and the two protruding parts are symmetrical along the y axis.
Preferably, a plurality of metallized through holes are formed in the second dielectric substrate, and the metallized through holes in the second dielectric substrate are circumferentially arranged along the first coupling gap.
Preferably, two metallized through holes are arranged in the parasitic branch copper-clad layer, the metallized through holes arranged in the parasitic branch copper-clad layer are symmetrical along the x axis, and two metallized through holes arranged in the parasitic branch copper-clad layer are symmetrical along the y axis.
Preferably, the first coupling gap and the second coupling gap are respectively arranged at the center positions of the first dielectric substrate and the second dielectric substrate.
Preferably, the size of the intermediate connection portion is larger than the size of the first coupling slit, and the size of the first coupling slit is larger than the size of the second coupling slit.
Preferably, the thickness of the first dielectric substrate is greater than the thickness of the second dielectric substrate, and the thickness of the second dielectric substrate is greater than the thickness of the third dielectric substrate.
Preferably, the side wall of the metallized through hole is metallic copper.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can realize the dual-band characteristic of the antenna through a simple structure.
2. The invention has the advantages of simple structure, small size and the like.
3. According to the invention, the radiation characteristic of the high-frequency part of the antenna is improved through loading the copper-clad layer of the parasitic branch.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a 5G millimeter wave dual-band antenna based on a dual-loop structure provided by the invention;
FIG. 2 is a schematic diagram of a structure of a first dielectric substrate, a second dielectric substrate, and a third dielectric substrate according to the present invention;
fig. 3 is a schematic top view of a 5G millimeter wave dual-band antenna based on a dual-loop structure according to the present invention;
fig. 4 is an S11 parameter diagram of a 5G millimeter wave dual-band antenna based on a dual-loop structure according to an embodiment of the present invention;
fig. 5 is a diagram of an E-plane and an H-plane of a 5G millimeter wave dual-band antenna based on a dual-loop structure according to an embodiment of the present invention at 27 GHz;
fig. 6 is a diagram of an E-plane and an H-plane of the 5G millimeter wave dual-band antenna based on a dual-loop structure according to an embodiment of the present invention at 29 GHz;
fig. 7 is a diagram of an E-plane and an H-plane of a 5G millimeter wave dual-band antenna based on a dual-loop structure according to an embodiment of the present invention at 39 GHz;
fig. 8 is a schematic diagram of real gain of a 5G millimeter wave dual-band antenna based on a dual-loop structure according to an embodiment of the present invention.
The figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1:
the invention provides a 5G millimeter wave dual-band antenna based on a dual-ring structure, which comprises a microstrip feeder 1, an antenna radiator, a first dielectric substrate 2, a second dielectric substrate 3 and a third dielectric substrate 4; the first dielectric substrate 2, the second dielectric substrate 3, and the third dielectric substrate 4 may be Rogers5880. The 5G millimeter wave dual-band antenna based on the dual-ring structure adopts a multi-layer PCB structure.
The antenna radiator is arranged at the top end of the first dielectric substrate 2; the first dielectric substrate 2, the second dielectric substrate 3 and the third dielectric substrate 4 are sequentially attached to each other along the vertical direction; preferably, the antenna radiator is disposed in parallel at the top end of the first dielectric substrate 2. The thickness of the first dielectric substrate 2 is larger than that of the second dielectric substrate 3, and the thickness of the second dielectric substrate 3 is larger than that of the third dielectric substrate 4. The first dielectric substrate 2 is provided with a plurality of metallized through holes 5, and the metallized through holes 5 on the first dielectric substrate 2 are arranged along the circumferential direction of the antenna radiator; the second dielectric substrate 3 is provided with a plurality of metallized through holes 5, and the metallized through holes 5 on the second dielectric substrate 3 are circumferentially arranged along the first coupling gap 6. The sidewall of the metallized via 5 may be metallic copper.
The second dielectric substrate 3 and the third dielectric substrate 4 are respectively provided with a first coupling gap 6 and a second coupling gap 7, and the microstrip feeder 1 is arranged on the lower surface of the third dielectric substrate 4 and is vertically arranged with the second coupling gap 7; preferably, the first coupling slit 6 and the second coupling slit 7 are respectively disposed at the center positions of the first dielectric substrate 2 and the second dielectric substrate 3.
Establishing a space rectangular coordinate system, wherein the origin of the coordinate system is arranged in the center of the top surface of the first dielectric substrate 2, the x-axis is the width direction of the first dielectric substrate 2, the y-axis is the length direction of the first dielectric substrate 2, and the z-axis is the thickness direction of the first dielectric substrate 2; the medium uniform substrate is parallel to the xoy plane of the space rectangular coordinate system; the 5G millimeter wave dual-band antenna based on the double-ring structure is symmetrical along the x axis and the y axis, and the antenna radiator is symmetrical along the x axis and the y axis.
The antenna radiator comprises a double-ring nested radiation patch 8 and a parasitic branch copper-clad layer 9, wherein the double-ring nested radiation patch 8 is integrally connected with the parasitic branch copper-clad layer 9, and the double-ring nested radiation patch 8 and the parasitic branch copper-clad layer 9 are symmetrical along the x axis and the y axis.
The double-ring nested radiation patch 8 comprises an intermediate connecting portion 12, two first ring portions 10, two first circular portions 11 and two second ring portions 15, wherein the first ring portions 10, the second ring portions 15 and the first circular portions 11 are symmetrical along the y axis, the first circular portions 11, the second ring portions 15 and the first ring portions 10 are sequentially and concentrically arranged from outside to inside, the two first circular portions 11 are symmetrically arranged along the x axis, and the two first circular portions 11 are connected through the intermediate connecting portion 12. The intermediate connection 12 has a size larger than the first coupling slit 6, and the first coupling slit 6 has a size larger than the second coupling slit 7. In a preferred embodiment, the circumference of the second ring portion (15) is about 1 high frequency wavelength and the circumference of the first ring portion (10) is about 1 low frequency wavelength.
The parasitic dendrite copper coating 9 comprises a transition part 14 and two protruding parts 13, wherein the protruding parts 13 are connected with the first ring part 10 through the transition part 14, and preferably, the protruding parts 13 are integrally connected with the first ring part 10 through the transition part 14. The protrusions 13 are symmetrical along the x-axis, and the two protrusions 13 are symmetrical along the y-axis.
Two metallized through holes 5 are arranged in the parasitic dendrite copper-clad layer 9, the metallized through holes 5 arranged in the parasitic dendrite copper-clad layer 9 are symmetrical along the x axis, and the two metallized through holes 5 arranged in the parasitic dendrite copper-clad layer 9 are symmetrical along the y axis.
The antenna radiator adopts the coupling of the microstrip feeder line 1 and the first coupling gap 6 and the second coupling gap 7 to feed the antenna radiator, and specifically, the 5G millimeter wave dual-band antenna based on the double-loop structure adopts the coupling of the microstrip line 1 and the second coupling gap 7 to realize the feeding of the antenna, and the matching performance of the antenna is improved through the first coupling gap 6 and the second coupling gap 7. And the radiation characteristic of the high frequency part of the antenna is improved by the loading of the parasitic stub copper clad layer 9. The coupling is a direct feed to the microstrip feed line 1, whereby an electric field is indirectly generated across the first coupling slot 6 and the second coupling slot 7, thereby indirectly feeding the antenna radiator.
The 5G millimeter wave dual-band antenna based on the double-loop structure is characterized in that the microstrip feeder 1 is coupled with the first coupling slot 6 and the second coupling slot 7 to feed the antenna radiator, the characteristics of the double-loop nested radiation patch 8 structure can be obtained, currents in the y direction are distributed in the same amplitude and opposite directions, so that effective radiation is not generated, vector currents in the same direction are generated in the x direction, effective radiation is generated, and meanwhile, the double-loop nested radiation patch 8 is formed by nesting a first loop part 10 and a second loop part 15, so that the dual-band characteristic of the antenna is realized; meanwhile, through loading of the parasitic branches, the gain of the antenna when working in a high frequency band is improved.
Example 2:
aiming at the working antenna of the millimeter wave wireless communication system, the embodiment can cover two frequency bands of 26-29.5GHz and 37.5-41GHz, and can also be optimally designed to work in other frequency bands.
The size of the antenna is that the width w=10 mm of the first dielectric substrate 2, the length l=13 mm of the first dielectric substrate 2, the outer diameter rout of the first ring part 10=1.7 mm, the outer diameter rin=1.0 mm of the second ring part 15, the length wt=1.6 mm of the protruding part 13, the distance lt=3 mm of the protruding part 13 from the middle connecting part 12, the length ls1=4 mm of the first coupling slot 6, the length ls2=3 mm of the second coupling slot 7, the width ws1=0.4 mm of the first coupling slot 6, and the width ws2=0.2 mm of the second coupling slot 7;
the thickness h1=0.787 mm of the first dielectric substrate 2, the thickness h2=0.508 mm of the second dielectric substrate 3, the thickness h3=0.127 mm of the third dielectric substrate 4, the dielectric substrate is rectangular, the dielectric constant is 2.2, and the loss angle tan delta of the dielectric substrate=0.0009;
the S11 parameter of the antenna is shown in fig. 4. Fig. 4 illustrates that the present invention has good matching characteristics and a wider bandwidth in the operating frequency band. Fig. 5 is a diagram of the E-plane and H-plane of the antenna at 27 GHz. Fig. 5 in combination with fig. 6 can illustrate that the present invention has a stable radiation pattern in the low frequency band. Fig. 6 is a directional diagram of the E-plane and the H-plane of the antenna at 29GHz, and fig. 6 is combined with fig. 5 to obtain a stable radiation mode of the antenna at a low frequency band. Fig. 7 is a directional diagram of the E plane and the H plane of the antenna at 39GHz, and fig. 7 can illustrate that the antenna has a good stable radiation mode in a high frequency band, and the back lobe and the side lobe of the directional diagram are both lower. Fig. 8 is a schematic diagram of the real gain of the antenna. Fig. 8 illustrates that the present invention employs a simple microstrip structure, which provides a high gain in both frequency bands.
The millimeter wave dual-band characteristic of the antenna is realized through the simple dual-ring nested structure, the radiation characteristic of the high frequency band of the antenna is improved by utilizing the loading of the parasitic branches, and the millimeter wave dual-band antenna has the advantages of simple manufacturing process and lower cost.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (7)
1. The 5G millimeter wave dual-band antenna based on the double-ring structure is characterized by comprising a microstrip feeder (1), an antenna radiator, a first dielectric substrate (2), a second dielectric substrate (3) and a third dielectric substrate (4);
the antenna radiator is arranged at the top end of the first dielectric substrate (2);
the first dielectric substrate (2), the second dielectric substrate (3) and the third dielectric substrate (4) are sequentially attached to each other along the vertical direction;
a plurality of metallized through holes (5) are formed in the first dielectric substrate (2); a plurality of metallized through holes (5) on the first dielectric substrate (2) are arranged along the circumferential direction of the antenna radiator;
the second dielectric substrate (3) and the third dielectric substrate (4) are respectively provided with a first coupling gap (6) and a second coupling gap (7), and the microstrip feeder line (1) is arranged on the lower surface of the third dielectric substrate (4) and is vertically arranged with the second coupling gap (7);
establishing a space rectangular coordinate system, wherein the origin of the coordinate system is arranged in the center of the top surface of the first medium substrate (2), the x-axis is the width direction of the first medium substrate (2), the y-axis is the length direction of the first medium substrate (2), and the z-axis is the thickness direction of the first medium substrate (2); the antenna radiators are symmetrical along the x-axis and the y-axis;
the antenna radiator comprises a double-ring nested radiation patch (8) and a parasitic branch copper-clad layer (9), wherein the double-ring nested radiation patch (8) is integrally connected with the parasitic branch copper-clad layer (9), and the double-ring nested radiation patch (8) and the parasitic branch copper-clad layer (9) are symmetrical along the x axis and the y axis;
the double-ring nested radiation patch (8) comprises an intermediate connecting part (12), two first ring parts (10), two first circular parts (11) and two second ring parts (15), wherein the first ring parts (10), the second ring parts (15) and the first circular parts (11) are symmetrical along the y axis, the first circular parts (11), the second ring parts (15) and the first ring parts (10) are sequentially and concentrically arranged from inside to outside, the two first circular parts (11) are symmetrically arranged along the x axis, and the two first circular parts (11) are connected through the intermediate connecting part (12);
the parasitic branch copper-clad layer (9) comprises a transition part (14) and two protruding parts (13), wherein the protruding parts (13) are connected with the first ring part (10) through the transition part (14), the protruding parts (13) are symmetrical along the x axis, and the two protruding parts (13) are symmetrical along the y axis.
2. The dual-loop structure-based 5G millimeter wave dual-band antenna of claim 1, wherein a plurality of metallized through holes (5) are provided on the second dielectric substrate (3), and the plurality of metallized through holes (5) on the second dielectric substrate (3) are circumferentially arranged along the first coupling slit (6).
3. The dual-loop structure-based 5G millimeter wave dual-band antenna of claim 2, wherein two metallized through holes (5) are provided in the parasitic stub copper layer (9), the metallized through holes (5) provided in the parasitic stub copper layer (9) are symmetrical along the x-axis, and two metallized through holes (5) provided in the parasitic stub copper layer (9) are symmetrical along the y-axis.
4. The dual-loop structure-based 5G millimeter wave dual-band antenna of claim 1, wherein the first coupling slot (6) and the second coupling slot (7) are respectively disposed at the center positions of the first dielectric substrate (2) and the second dielectric substrate (3).
5. A 5G millimeter wave dual band antenna based on a double loop structure according to claim 3, characterized in that the size of said intermediate connection (12) is larger than the size of said first coupling slot (6), the size of said first coupling slot (6) being larger than the size of said second coupling slot (7).
6. The dual band structure-based 5G millimeter wave dual band antenna of claim 1, wherein the thickness of the first dielectric substrate (2) is greater than the thickness of the second dielectric substrate (3), and the thickness of the second dielectric substrate (3) is greater than the thickness of the third dielectric substrate (4).
7. The dual-loop structure-based 5G millimeter wave dual-band antenna of claim 1, wherein the sidewall of the metallized via (5) is metallic copper.
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| CN114665273A (en) * | 2022-03-10 | 2022-06-24 | 中国电子科技南湖研究院 | Dual-band millimeter wave planar antenna |
| CN114464998B (en) * | 2022-03-30 | 2024-03-12 | 安徽大学 | Millimeter wave double-split-ring slot antenna fed by coplanar waveguide |
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| US10879616B2 (en) * | 2018-08-30 | 2020-12-29 | University Of Electronic Science And Technology Of China | Shared-aperture antenna |
| CN111755805B (en) * | 2019-03-28 | 2022-02-18 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN111883917B (en) * | 2020-07-16 | 2022-08-12 | 南通大学 | Bandwidth reconfigurable dielectric patch filter antenna based on double-slit feed structure |
| CN112448157B (en) * | 2020-11-10 | 2022-04-22 | 安徽大学 | Millimeter wave integrated log-periodic antenna based on multilayer PCB |
| CN113036459A (en) * | 2021-03-08 | 2021-06-25 | 安徽大学 | Millimeter wave low-profile broadband circularly polarized slot-fed dipole array antenna |
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| CN113410631B (en) * | 2021-06-16 | 2023-04-18 | 南通大学 | Hybrid antenna for 5G millimeter wave dual-band application |
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| KR20110005917A (en) * | 2011-01-01 | 2011-01-19 | 이은형 | Omni-directional dual polarization antenna with conical beam pattern |
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